Joseph l



(No Model.)

0 WEB FEEDING DEVICE FOR PRINTING PRESSES.

No. 508,814. Patented Nov. 14, 1893.

- UNITED: STATES PATENT OFFICE.

JOSEPH L. 00X, OF BATTLE CREEK, MICHIGAN, ASSIGNORTOTHE DUPLEX PRINTINGPRESS COMPANY, OFSAME PLACE.

WEB-FEEDING DEVICE FORPRlNTlNG -PRESSES.

SPECIFICATION forming part of Iletters Patent No. 508,814, datedNovember 14, 1893.

' Application filed December 6, 1892. Serial No. 454,277. (No morlaLl Toall whom it may concern.-

Be it known that I, JOSEPH L. COX, of Battle .Creek, in the county ofCalhoun and State of Michigan, have invented certain new andusefullmprovements in Web-FeedingDevices for Printing-Presses; and I dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the tinuously drawn from thepaper roll into the press and-positively and continuously delivered bothduring and after themaking of an impression thereon, and it isespecially designed for use in connection with such presses as are shownand described in Letters'Patent of the United States, granted to me asfollows:

No. 459,813, dated September 22, 1891, and No. 478,503, dated July 5,1892.

The drawing represents a diagrammatical side elevation of a perfectingpress, illustrating the improved web feeding and shifting devices.

-The type beds h, h are arranged parallel, one over the other, and theimpression cylinders H, H co-operate therewith. The web is led in fromthe feed roll, over a feeding and looping device hereinafter described,to and over a web guide roller M, thenbetween the cylinder H and bed h,to and under a guide roller m, up over a guide roller m, back betweencylinder H and bed h to and over a roller M, then under a looping rollerZ, all substantially as in Patent No. 478,503 aforesaid, and then upover a delivery roller S over which it is drawn by coacting rollers sand coaxing tapes T, substantiallyas set forth in my Patent No. 459,813.The cylinders and the web guide rollers f, f are preferably reciprocatedover the beds by means not shown, substantially for instance asdescribed in my aforesaid patents. The web looping roller 1 isjournaledin reciprocating bars L which are connected at their lower ends by linksL" to the free ends of vibrating levers N which are pivoted at theirother ends to the main which is mounted in supports w to a feed roller Aover which it is drawn by means of coaxing tapes 6, t, running overrollers a, a. The coaxing tapes t operate substantially like thedelivering tapes T and are driven continuously during the operation ofthe press by any suitable mechanism as belts or gearing from anysuitable source of power, as from the main shaft. The drive mechanismfor said tapes is not shown, for its construction is not part of presentinvention,and can be readily supplied and understood by any one skilledin the art. From the feeddevices the web is led over a roller Bjournaled on the main frame under a governor roller 0 and then over aroller 1) journaled on the frame.

beside roller B to'roller M. The web is thus looped under the governorroller 0, which as shown is journaled in a wheeled carriage X travelingup and down on curved bars F attaohed to the main frame constructed sub-I stantially like that described in my Letters Patent No. 370,321, ofSeptember 20, 1887, and

therefore a more detailed description thereof.

is unnecessary. This governor roller 0 is a gravity roller, and takes upany slack of the infed web during the taking of animpressi'on, andmaintains the tension of the web by its weight. It may be otherwise Imounted or guided provided it is left free to take up the slack in web.

The operation of the press is similar to that of the press in Patent No.478,503, but vin place of a positively actuating looping roller,

I employ the idler gravity governor roller described, and difierent feedand delivery mechanism.

The parts are so adjusted that the amount of web positively drawn fromthe roll W and fed into the press by the feed devices, and

Too

the amount of web positively drawn out of the press by the deliverydevices will be equal. While the impressions are being taken, the web isnipped between the beds and cylinders and is of course held thereby, butduring this time the roller Z is raised at such a speed that the loop ofweb thereunder is paid out to the delivery fast enough to preventtearing of the web, and at the same time the governor roller 0 (which issupported by the loop of web thereunder) descends and takes up all theweb fed in during the taking of an impression, holding the web always ata constant and uniform tension. As soon as the impression is taken theroller Z is drawn down and in so doing pulls forward through the pressand over the beds the amount of web which was infed and taken up by rollC during the taking of an impression. This amount of web inconneetionwith what is at the same time fed out by the delivery isenough for an impression plus margins.

By the employment of coaxing tapes, rupture of the web is prevented, iffor any reason travel of the Web is hindered in its course through thepress.

As the above described systems of feeding may be applied to variousforms of presses, I do not limit myself wholly to the employment thereofonly with the presses indicated and herein described.

Having described my invention, what I claim as new, and desire to secureby Letters Patent thereon, is-

1. The combination in a printing press of two type beds arranged oneover the other, and two cylinders cooperating therewith for producing animpression, a positively operated web feed, and a gravity governorroller adapted to take up slack between the feed and printingmechanisms, and web guide rollers with a web delivery mechanism, and apositively operated web looping roller interposed between the printingmechanism and the delivery and supported independently of the web, allconstructed and arranged to 0perate substantially as described.

2. The combination in a printing press of mechanism for taking animpression, and Web guide rollers, a continuously acting deliverymechanism, a positively reciprocated web looping and shifting rollerbetween the printing mechanism and the delivery, a positive Web feed,and a gravity governor roller, interposed between the feed and printingmechanism, and running on curved ways, adapted to take up slack in andtension the Web, substantially as described.

3. The combination of two type beds arranged one above the other, twocylinders coacting with said beds, and web guide rollers for directingthe web successively between said beds and cylinders; with acontinuously acting web delivery mechanism, a positively reciprocatedweb looping and shifting roller between the printing mechanism anddelivery, a positive web feed, and a gravity governor roller interposedbetween the feed and printing mechanism, and running on curved ways,adapted to both take up slack in and tension the web, substantially asdescribed.

In testimony that I claim the foregoing as my own I affix mysignature inpresence of two witnesses.

JOSEPH L. 00X.

Witnesses:

ALEX. S. STEUART,

ARTHUR E. DoWELL.

